I have considered buying a leveler, but haven't done so yet. I normally use a large chain between the front & rear attachment points, and I have always been able to level the engine by changing the link that I use to hook the hoist hook onto. Of course that's not as handy as a leveler because I have to take all weight off of the hoist in order to move my leveling point. Yes, my cab is on the truck, but none of the sheet metal in front of the cab is on yet, so that will help a lot. Thanks for your reply. You are always helpful.